Session1+2

PHP ?
ก F Web Server
PHP ˈ C based language
F ก F PHP ก F ก
Web Browser F Internet Explorer, Fire Fox, Safari ˈWeb Browser F Internet Explorer, Fire Fox, Safari ˈ
F
Web Site ก F Yahoo Google ก F PHP
ก Web Server F F F PHP
ก Web Site ก ก
PROJECTSOFT.BIZ ก WEB APPLICATION F PHP MYSQL
AJAX(JQUERY)

Call PHP Program By Web Browser
ก ก hello.php F 127.0.0.1 F
AJAX(JQUERY)

Run PHP on PC Windows OS
Appserv = PHP + Apache + MySQL
Apache ก ก Web Server ( F ก ˈ
Web Server)
PHP Compiler .php filePHP Compiler .php file
(Source Code)
MySQL ก ก F
F Notpad++ ก .php file
AJAX(JQUERY)

AppservInstallation
F F F ก
ʽ ก Web Browser ก
localhost F F ก Flocalhost F F ก F
Start > All Programs > Appserv > Control
Server By Service > Apache Restart
AJAX(JQUERY)

Hello World
1. F Folder C:AppServwww ก
Source Code Folder myPHP
2. F Notepad++ F .php file F index.phpF F F
3. Code
<?php echo ‘Hello World’; ?>
4. ʽ ก Web Browser F
http://localhost/myPHP
AJAX(JQUERY)

PHP Code Structure
F F tag <?php ?>
C based language F F ;
<?php<?php
……;
……;
……;
?>
AJAX(JQUERY)

PHP Output String
F echo “……”; Webbrowser
F F ก F F F <br /> F F
<?php<?php
echo “Hello <br />”;
echo “World”;
?>
AJAX(JQUERY)

PHPString Variable
PHP F F $
Case Sensitive F F F ก
F กF ก
<?php
$str=“A”
echo $str;
?>
AJAX(JQUERY)

PHP String Variable
ก F
<?php
$str1=“A”;$str1=“A”;
$str2=“B”;
$str3=$str1.$str2;
echo $str3;
?>
AJAX(JQUERY)

PHP String Variable
F string F F “…..”
F F F ก F “ string
F F ” F echo “””;
F F F ก F $ stringF F F ก F $ string
F F $ F echo $
F /*……*/ F ก
F F // F ก
AJAX(JQUERY)

PHP String Variable
<?php
$str="String";
echo "$str="String"";echo "$str="String"";
?>
AJAX(JQUERY)

PHP Numeric Variable
F F F F “…”
<?php
$num=1;
echo $num;echo $num;
?>
ก F F echo ก ˈ
F
AJAX(JQUERY)

PHP Numeric Variable
PHP ˈ C based language
ก F C F กF +,-
,*,/,(,),++,--,+=
AJAX(JQUERY)

PHP Automatic Type
Conversion
Numeric to String
<?php
$str1=“I am ”;
$str2=“ years old.”;$str2=“ years old.”;
$num=20*2;
echo $str1.$num.$str2;
?>
AJAX(JQUERY)

PHP Automatic Type
Conversion
String To Numeric
<?php
$str_num=“0.5”;
$num=0.5;
$sum=$str_num+$num;
echo “Sumation is ”.$sum;echo “Sumation is ”.$sum;
?>
AJAX(JQUERY)

PHP Automatic Type
Conversion
F F ก F F Numeric String F F
“ . ”
F F ก F ˈ ก F string
string ก, , , F
F F ก F ˈ ก F
string ก, , , F
AJAX(JQUERY)

PHP Array Variable
ก F ˈ Array F F
[] F index( F Array)
<?php
$arr[0]=1;$arr[0]=1;
$arr[1]="a";
echo $arr[0].$arr[1];
?> ก F Array ก ก F ก F ก
F
AJAX(JQUERY)

PHP Array Variable Count
F F Array F ก Fก F F F
count()
<?php
$arr[1]="First array";$arr[1]="First array";
$arr[2]="Second array";
echo "Variable arr has ".count($arr)."items.";
?> ก F F Array F 1 F
AJAX(JQUERY)

PHP Logical Operation
C based language
>, >=,<,<=,==, !=
&& ,||
<?php
$true=1;$true=1;
$false=0;
echo $true>=$false;
echo $true||$false;
echo $true!=$false;
echo $true&&$false;
?>
AJAX(JQUERY)

PHP Logical Operation
<?php
$n=1.5;
$n2="1.5";$n2="1.5";
echo $n==$n2;
?>
F ก F ก F
AJAX(JQUERY)

Control Statement
if( logical operation)
{ ……;}
else if(logical operation)
{ ……;}
else
{ ……;}
else
{ ……;}
F logical operation ˈ 1
{ }
F F logical operation F ˈ 1
else
AJAX(JQUERY)

Control Statement
<?php
$var="123";$var2=456;
if($var==123){echo "$var=123";}if($var==123){echo "$var=123";}
echo "<br />";
if($var==$var2){echo "$var=$var2";}
else{echo "$var not equal $var2";}
?>
AJAX(JQUERY)

Control Statement
while (logical operation){ …..;}
ก {} logical
operation F ˈ 1
AJAX(JQUERY)

Counter Program
ก
<?php
$n=1;
/* count 1 to 10*//* count 1 to 10*/
while($n<=10)
{
echo $n."<br />";
$n++;
}
?>
AJAX(JQUERY)

Example
ก F F F while loop
12345
12345
1234512345
12345
12345
AJAX(JQUERY)

Loop And Array Variable
ก F Array F Items F Loop while
<?php
$arr[1]="1";
$arr[2]="2";
$arr[3]="3";$arr[3]="3";
$n=1;
while($n<=count($arr))
{
echo $arr[$n]."<br />";
$n++;
}
?>
AJAX(JQUERY)

For Loop
for(ก F F ; F ก F loop; F F F loop)
{
…..;…..;
…..;
}
AJAX(JQUERY)

For Loop
<?php
for($n=1;$n<=10;$n++)
{
echo $n.”<br />”;echo $n.”<br />”;
}
?>
$n=1 ก ก F F
$n<=10 F ก F loop
$n++ F F F loop
AJAX(JQUERY)

For Loop And Array Variable
ก F Array F Items F Loop while
<?php
$arr[1]="1";
$arr[2]="2";
$arr[3]="3";$arr[3]="3";
for($n=1;$n<=count($arr);$n++)
{
echo $arr[$n]."<br />";
}
?>
AJAX(JQUERY)

SessionSession
AJAX(JQUERY)

Session
◦ Session F ก F F
F F F
◦ ก F F F a.php F ก F session F F
b.php ก F F session F a.php F ก F
F กF ก
◦ ก F F F ʽ F F web browser ก
◦ ก F F F a.php F F session
F F ʽ F F web browser session F ʽ
F F web browser ก F b.php ก F b.php ก
F F session ก F a.php F F ก
AJAX(JQUERY)

Session
◦ F ก session ก ก F F F ก
Fก ก ก server
◦ ก ก F session F F
ob_start();session_start(); F ก
◦ F F session F F◦ F F session F F
$_SESSION[" "] ก F F
AJAX(JQUERY)

Session
F a.php
<?php
ob_start();
session_start();
$_SESSION[“x”]=1;$_SESSION[“x”]=1;
echo $_SESSION[“x”];
$_SESSION[“x”]=“b”;
?>
AJAX(JQUERY)

Session
F b.php
<?php
ob_start();
session_start();
echo $_SESSION[“x”];echo $_SESSION[“x”];
$_SESSION[“x”]=999;
?>
AJAX(JQUERY)

Session
F c.php
<?php
echo $_SESSION[“x”];
?>
AJAX(JQUERY)

ก F
• ก F browser PHPH F 2 F ก
• header(“Location: file_name url”);
• echo “<script>location=‘file_name url’</script>”;
• F
• header(“Location: index.php”);
• header(“Location: home.html”);
• header(“Location: http://www.google.co.th”);
• echo “<script>location=‘index.php’</script>”;
• echo “<script>location=‘home.html’</script>”;
• echo “<script>location=‘http://www.google.co.th’</script>”;
AJAX(JQUERY)

Session1+2

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